Lubricating device



March 31. 1925. 1,531,375

A. L. BRIDGHAM LUBRIC AT-ING DEVICE Filed May 8, 1924 Fig- L Patented Mar. 31, 1925.

o NlTE-D stares RA-TIENT- QFEE E- ARTHUR L. BBTDGEAM, on BQSUON, 1EIASSAGHUSETTS.

LUBRICATING DEVICE.

Application: filed Pie-y e,

To aZZ whom dialog cones? v 7 Be it knownthatfiglhnwlann Berna HAM, of Boston; inthe county of Suffolk and State oflila'ssachusettsya citize-n otthe United States, have invented a now and use- :tul Improvement in Lubricating Devices, of which the folloivin -is a hill, clear and- 9131- act' description, ireIerence being had to the accompanying drawings iorn in a partof this specificationyin ez-iplain'ingpitsnature.

The invention relates to a lubricating device and essentiallytoa 'deviceor arr? ment' for lubricating-- the joints bet, 'een parts subjected to high pressure steam.

Among the essential objects of the invention are to provide a stead feed-ofoilg -to apply the oil in such a manner that-' not be injured by, the steam; to'apply the oil efi'ectively, and to use the steani as a means for aton'nzingtlieoil and-applying it into the joints'or places Where lubrication is required.

The invention is shown in ytl e drawings applied to the: lubrication of the pist 11 valve and piston of'a locomotive 0 which it is especially applicable and in which only such parts are-shown as are necessary to a proper understanding of the invention;

Fi'gure 1 is a view partly in; vertical cross section and partly in side elevation otthe various parts and" applied lubricatingrle-i vice.- I

Fig-.2 is'a section of'a detail of construction laterto be refers-ed to, p

Fig. 3 is a cross section 'ofa further detail of construction later to be referred to.

Referring to the drawings V 1 represents the cylinder, 2 the piston and 3 the piston rod; 1

l is the seeing or chest containing the piston valve 5 which controls the admission of steam to the opposite ends of the cylinder 1. 6 and 7 represent the opposite ends or headset the piston Valve which slidenpon annular b arings S and 9,'1esp ect1vely, -contained Within the casing 4. Steam is ad-' mitted to the interior ofthe casing by Way of an inlet 10"com1nunicating with a chamber 11 iiiterniecliateuthe opposite ends or 'heads of the piston nves menivithin each of the annular bearing s 8 and 9am openings-12 connecting, respectively,

with annular passagesilil and is former,

Within the casing outside the annular bear-- ings S and 9. The annular passages. 13 and 14: connect, respectively, with passages 15 tion which port 192%" Serial N0. '7 11;?611" and 16 leadhigmespectirrely, to. theopposite beyond thepiston, escaping/hy- Way of the opening-s12 in adijacentohearing;and 1 thence into the adjacent" exhaust: chainher at thc'end of the casing.

The parts thus'fa'r mentioned (are. of coinmontype and function in the usnal1n1anner. They are reii'enred toxin order 1100btain a proper understanding'ot. the invenns essentially to; a means for lubricating the joints.- between theheads I onendsfi and 7 of the piston valveand ilillO 'beai ings 8 and 9 on which these :headsslide also, to means: for lubricating the joint. be n tween the cylinden 1 and pistonqQ;andito vi-hich means of lubrication attentiionlis new I directed;

leading? from a; lubricate-r il is directedmtoi i pass 20 is af pipe (not I shown).

' through this pipe; from the Iu-bricator,iunzder the-usual pressui e. ThepgpeQO isp ozvided at its end with a pipe fitting. 21 frbin-i :Which branch-pipes22and23 Thesepipes have th ieatled connecton withfi the; casing l andthe'endsthereofconnect,respectively; V

with passages Qlancl :25 extending, respectively, through the -beaiangs 8. and 9. The

passages] Qa -and '25 extendthrough the heap ings at points slightly- 111 ai dl-y ienioved from the line: of openings l2rthi ough the bea-rin gs openinto' the joints between the hearings and the vieads of the piston valve. i

The pipe fitting 21 is providecl -on its in terior withzarelatively smallor pinhole p n g! from the pipe 20 into; thepipes QQ/fifltl 23 I v The heads (3 and: T 'otythe pistonvalve each comprises ancnd-supporting beaaang 27, surrounding- Which is the usual building 28 and" packing rings 29 and-30; of-Which '26 through which oi'l may pass 'The inner i'ings packing extensions or 'Oilthen directed slowly'pass through the pipe fitt1ng21-1nto the branch pipes joints between thebearing rings 8 eating these joints. obtained -erated with but a slight -for admitting little steani operating the piston at low speed.

29 are the outer packing rings'and 30'the inner rings. When the valve head is in place engaging its. bearing, owing to the slight projection" of thepackingrings beyond the outer face of the bL1ll-r'1ng,...an..a1ie nular chamber 31 will be formed'betw'een the packing rings, and betweenthe bull- .ring and the bearing, making an effective tially neutral position"'within'the casing- 4 thepassages 24' and '25 through the bearing rings 8 and 9 will :be coveredby the heads of the piston valve'or extensions "32thereto. through the pipe 'will 22 and o 23 and thence through the openings 2e and 25 into the and9 and the heads 6 and 7 .of'the piston valve lubrilhe same effect will be when the piston valve'is' being oprange of movement to the cylinder for At such time oil thus admitted to the respective joints will not pass spectivejoints which are closedby the packing :rings'30 on the heads of from the chamber 11 to which high'pressu're steam 'is'being admitted.

Assuming now that a'full head of steamis being admitted to the cylinderior operating the pistoiiand that, the piston valve isbeing operated with the 'fullrangefof movementafforded it and that the piston valve is being moved in the direction of the arrow thereon: hVi 'hen the piston valve moving in the direction thus lndicated has reached the limit of .its stroke,then the packing "wing 32 on the head Got the piston valve will have moved outwardly to a point j mitted to pass by it where steam will be adthrough the opening 245 in the bearing ring 8. At this same time the opposite end or head 7 of thepiston" valve will have reached a position where it liesdirectly in line with the opening 25 in the Y then 'bein bearingrring 9. I1i-fact-,the opening 25 will annular chamber 31 in the head 7. Immediately upon communication being estabber 11 of the casing, high pressure steam will pass through the opening2e and this acting nthe manner of an in ector, Wlll blow all oil in the pipes 22 and 23 through the opening WVhen the 7 through the chamber 11 to which high pressure steam is-be'ing admitted, but will be admitted di'rectly'intotherethe piston'fvalve direct communicatlon with the casing and all parts of the head are under J 'very low pressure. Accordingly, high pressure steamcarrying-the-oil into the head and joint meets with practically no pressure resistance and the oil can be. carried lto all ,parts'of the headand joint, thoroughly lubricating them under conditions whenconn plete-lubrication is mostto' be desiredl. Pre ciselythe same opera iontakesplace at. the

opposite end or head 6 of the-piston .valve when the valve-is moved in a direction 're- M verse'to thatindicated by the arrow thereon. in such casehigh pressure steam will be ad- ;mitted' from the chamber ll'to pass by' the wing extension 32 on the'head l' ofthe piston valve and through" bearing9 and blow all oil in the pipes .22 and 23 through the opening 24: in the "bearing '8 and into the joint between this bearing and the adj acent head 6 of the piston valve thoroughly lubricating this head.

' WVith the heads; of the pi the joints between the'heads and their respective bearings thus lubricated, aconsiderable amount of oilwill escaperrom the heads of the piston valve and passing -through the openings 12 in the respective bearings 9' and 10, will enter the PitSSilgGSltl ..and 16 leading to the ohambero'fthe cylinder 1 for lubricating the pistonnoperating therein; Oil containedin the passages 15..

'the opening 25 in the stonh valve and 33 are formed in the wallv withlpacking'rings-35and 36 on either side...

thereofv with extension beyond the face of the bull-rlng-leaving an annular chamber 37 ad acent the interior wall of thecylinder and into this chamber. andonto-the adjacent hrough the ports33 during the operation of thespiston. a q

Having thus fullydescribed my invention, I claim and desire to secure by Letters Patent of theUnitedStatem- I 1. The combination with a pistonvalve having separate spaced heads and a casing edge of the piston .oil will be injected.

in which the valve is reciprocable, said casing having on the interior thereof separate spaced bearings for said heads of the valve and between said heads a chamber in which steam is received under pressure, of means for lubricating the respective heads of the valve and their respective bearings comprising connections into which oil is admitted and which connections have separate outlet openings into the joints between the heads of the valve and their respective bearings, said connections and outlets therefrom being arranged whereby steam admitted to the casing will be permitted to enter said outlets and pass through said connections during the reciprocation of the valve and eject oil from said connections into said joints and to the heads of the valve for lubricating said heads and their adjacent bearings.

2. The combination with a piston valve having separate spaced heads and a casing in which the valve is reciprocable, said casing having on the interior thereof separate spaced bearings for said heads of the valve and between said heads a chamber in which steam is received under pressure, of means for lubricating the respective heads of the valve and their respective bearings comprisin connections into which oil is admitted extending through said casing and bearings with outlet openings into the joints between the heads of the valve and said bearings, said connections being arranged whereby steam admitted to the casing will be permitted during the reciprocation of the valve to successively enter said connections by way of said outlets and passing through said connections eject oil therefrom into said joints and onto said heads of the valve for lubricating said heads and their adjacent bearings.

3. The combination with a piston valve having separate spaced heads and a casing in which the valve is reciprocable, said casing having on the interior thereof separate spaced bearings for said heads of the valve and between said heads a chamber in which steam is received under pressure, of means for lubricating the respective heads of the valve and their respective bearings comprising a lubricator pipe into which oil is ad-" mitted with branch connections extending through said casing and bearings with outlets into the joint between the heads of the valve and said bearings, said pipe being provided with a relatively restricted opening separating the interior thereof from said branch connections, said branch connections and outlets therefrom being so disposed and arranged that steam admitted to said chamber and easing will be permitted to enter said outlets successively as the valve is reciprocated and pass through said branch connections and thereby eject oil contained within said connections into the joints between said heads and their respective bearings for successively lubricating said heads and bearings. V

4. In combination, a piston valve having separate spaced heads, a casing. in which the valve is reciprocable, said casing having on the interior thereof separate spaced bearings for said heads of the valve and between said heads a chamber in which steam is received under pressure, a lubricator pipe into which oil is received with branch connect-ions having outlets into the joints-between said heads and their respective bearings, and means carried by the respective heads to have engagement with said bearings and arranged whereby said means will permitof communication being successively established between said chamber and one or the other of said outlets as the valve is reciprocated.

5. In combination, a reciprocating member, a bearing therefor, a chamber in which fluid is compressed, and means for lubricating the joint between said member and bearing, said means comprising an oil-containing 1 connection with an outlet into the joint between said member and bearing for lubricating the same, and means whereby the fluid pressure in said chamber will intermittently, during the reciprocation of said member, be admitted to said connection for ejecting oil therefrom into said joint for lubricating said member and bearing.

ARTHUR L. BRIDGHrilVL 

